It is obvious that you cannot hold the HS50 steady hence blurred images so the comparison is useless. I would put them all on a tripod with Image Stabilization off.

-=[ Joms ]=-

That's not motion blur. Either the AF isn't doing a good job or the lens is very soft. The HS50's images are distinctly inferior to those of the other two cameras in this comparison.

Whichever is the reason, I would exclude the HS50 in this test or redo it properly.

-=[ Joms ]=-

He's testing the three cameras he has to decide which one to keep for his intended purposes - which does not apparently include a tripod nor turning off IS. Are you suggesting they send the HS50 back already? From what I've seen (and not just in this thread), I would. So much potential...

No I am suggesting to do the proper testing (as much as possible). I would shoot the HS50 at 600mm too since he considered that FL for his purposes. Handholding 1000mm EFL is not easy for those with shaky and old hands.